From 0504712346a7f7571fa9223fba1b9535d260bd1a Mon Sep 17 00:00:00 2001
From: Duane Robertson <duane@duanerobertson.com>
Date: Mon, 3 Apr 2017 01:44:02 -0500
Subject: [PATCH] Localize get_perlin_map data.
---
mapgen.lua | 12 ------------
undergen.lua | 11 ++++++++++-
2 files changed, 10 insertions(+), 13 deletions(-)
diff --git a/mapgen.lua b/mapgen.lua
index cb0d9f8..e0c88dc 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -4,8 +4,6 @@
local DEBUG = false
-local max_depth = 31000
-local seed_noise = {offset = 0, scale = 32768, seed = 5202, spread = {x = 80, y = 80, z = 80}, octaves = 2, persist = 0.4, lacunarity = 2}
-- This tables looks up nodes that aren't already stored.
@@ -42,16 +40,6 @@ local function generate(p_minp, p_maxp, seed)
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local csize = vector.add(vector.subtract(maxp, minp), 1)
- -- use the same seed (based on perlin noise).
- do
- local seed = minetest.get_perlin(seed_noise):get2d({x=minp.x, y=minp.z})
- if not (seed and type(seed) == 'number') then
- return
- end
-
- math.randomseed(seed)
- end
-
local write = false
if not underworlds_mod.underzones then
return
diff --git a/undergen.lua b/undergen.lua
index e1534d6..bef4213 100644
--- a/undergen.lua
+++ b/undergen.lua
@@ -8,6 +8,7 @@ local max_depth = 31000
local terrain_noise = {offset = 15, scale = 10, seed = 3721, spread = {x = 40, y = 40, z = 40}, octaves = 3, persist = 1, lacunarity = 2}
+local terrain_map
underworlds_mod.undergen = function(minp, maxp, data, p2data, area, node, underzone)
@@ -19,7 +20,15 @@ underworlds_mod.undergen = function(minp, maxp, data, p2data, area, node, underz
local map_max = {x = csize.x, y = csize.y + 2, z = csize.z}
local map_min = {x = minp.x, y = minp.y - 1, z = minp.z}
- local terrain = minetest.get_perlin_map(terrain_noise, {x=csize.x, y=csize.z}):get2dMap_flat({x=minp.x, y=minp.z})
+ if not terrain_map then
+ terrain_map = minetest.get_perlin_map(terrain_noise, {x=csize.x, y=csize.z})
+
+ if not terrain_map then
+ return
+ end
+ end
+
+ local terrain = terrain_map:get2dMap_flat({x=minp.x, y=minp.z})
if not terrain then
return
end
--
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